Shaft-tug



E. LOGAN.

(No Model.)

No. 524,529. Patented Aug. 14, 1894.

Tm: Hemus PErEns co., maremma.. wumamm n. q.

UNITED STATES PATENT OFFICE.

ELMER LOGAN, OF NEW BRUNSWICK, NEW JERSEY.

SHAFT-Tue.

SPECIFICATION forming part of Letters Patent N o. 524,529, dated August 14, 1894. Application led May 10, 1894. Serial No. 510,807- (No model.)

.To all whom t may concern:

' Be it known that I, ELMER LOGAN, a citizen of the United States, residing at New Brunswick, in the county of Middlesex and State of New Jersey, have invented a new and useful Shaft-Tug, of which the following is a specification.

The invention relates to improvements in shaft tugs.

The object of the present invention is to improve the construction of shaft tugs, and to provide for the same an anti-friction roller which may be readily applied to the ordinary construction of tugs, and which will present a neat and compact appearance.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claim hereto appended.

In the drawings: Figure l is a perspective view of a tug provided with my improvements. Fig. 2 is a vertical longitudinal sectional view of the same. Fig. 3 is a transverse sectional view. Fig. 4 is a detail per spective view of the roller and its bearingplate. Figs. 5 and 6, are detail perspective views of the attachment layer and the top layer or cover. l

Similar numerals of reference indicate corresponding parts in theseveral figures ofthe drawings.

l designates ashaft tug, and arranged within the same, on the bottom thereof, is a curved bearingplate 2, having its upper face recessed, at 3, and provided at opposite ends of the recess with bearing-perforations et, receivinga spindle 5, on which is journaled an antifriction roller 6, tapering toward its ends. The tapering anti-friction roller is adapted to project slightly from the surrounding portion of the tug t-o engage a shaft or thill to avoid friction, and to enable the tug to move readily on a shaft, for reasons which will be readily understood by those skilled in the art.

The bearing plate tapers in thickness at its end-portions, it is secured at the bottom of the tug by an attachment plate or layer 7, constructed, preferably, of leather and stitched to the tug at its edges'and providedV with a longitudinal opening to receive the roller, and tapering from its center to its ends toprovide a neatv lit. Upon the upper face of the attachment-plate or layer is arranged a tapering top piece or layer 7, having alongitudinal opening to permit the center or bulged portion of the tapering roller to project slightly through it, to enable the roller to engage the lower face of a shaft and at the same time to cause the Vtug to present a neat and compact appearance, and to conceal the bearing-plate and a greater portion of the tapering roller.

It-will be seen that the anti-friction roller is compactly arranged, that by the particular construction of the attachment layer and the top layer it may be readily applied to the ordinary construction of tug, and that the greater portion of the roller and the bearingplate of the same are concealed from view.

Changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacritlcing any of the advantages of this invention.`

The combination with a shaft tug, of a bearing-plate tapering toward its ends and provided intermediate of its ends with a recess and having perforations at opposite sides thereof,said bearing-plate being located within the tug at the bottom thereof, a spindle arranged in the perforations of the bearingplate and extending along the recess, a tapering anti-friction roller mounted on the spindle, the tapering attachment layer pr0 vided with a longitudinal opening and arranged over the bearing-plate, and the taper ing upper layer provided witha longitudinal opening receiving the anti-friction roller, said upper layer being secured upon the attachment layer, above it, substantially as and for the purpose described. n

In testimony that I claim the foregoing as my own I have hereto affixed mysignature in the presence of two witnesses.

ELMER LOGAN.

Witnesses:

CHARLES W. RUSSELL, JOHN H. KING.

and the roller projecting slightly 

